Inductor Kits

Part Number	Description / PDF	Quantity
744062 Würth Elektronik Midcom	KIT INDUCTOR TPC LARGE SIZES	0
744032 Würth Elektronik Midcom	SMD INDUCTORS WE-LQ	1
7843833 Würth Elektronik Midcom	SMD POWER INDUCTORS WE-MAIA - 30	1
744790 Würth Elektronik Midcom	SMD MULTILAYER INDUCTORS WE-MI	1
744761 Würth Elektronik Midcom	SMD WIRE WOUND CERAMIC INDUCTORS	1
744870 Würth Elektronik Midcom	SEPIC APPLICATIONS WE-DD	1
74491 Würth Elektronik Midcom	DESIGN KT ASSORT OF IND WE-CAIR	1
744728 Würth Elektronik Midcom	DESIGN KIT INDUCTORS FOR TI	2
744778 Würth Elektronik Midcom	KIT INDUCTOR PD SERIES SMALL	0
744355 Würth Elektronik Midcom	KIT INDUCTOR HC/HCA SMALL SIZES	0
744705 Würth Elektronik Midcom	TOROIDAL LINE CHOKES WE-FI	2
7447713 Würth Elektronik Midcom	SMD POWER INDUCTORS WE-PD - 1030	1
7440405 Würth Elektronik Midcom	SMD POWER INDUCTORS WE-LQS - 504	1
744786A Würth Elektronik Midcom	MULTILAYER RF IND KIT 0603	13
744743 Würth Elektronik Midcom	RADIAL LEADED WIRE INDUCTORS WE-	7
7443732 Würth Elektronik Midcom	SMD LOW PROFILE HIGH CURRENT MOL	0
744773 Würth Elektronik Midcom	SMD POWER INDUCTORS WE-PD2 - 453	2
744765A Würth Elektronik Midcom	SMD WIRE WOUND CERAMIC INDUCTORS	10
7443832 Würth Elektronik Midcom	WE-MAPI DESIGN KIT	1
744713 Würth Elektronik Midcom	ROD CORE INDUCTORS WE-SD	1

Inductor Kits

1. Overview

KitsInductor Kits are modular assemblies containing inductors with varying specifications, designed for rapid prototyping, educational purposes, and industrial applications. Inductors are passive electronic components that store energy in magnetic fields and resist current changes. They are critical in power management, signal filtering, and electromagnetic interference (EMI) suppression. Modern electronics rely on inductors for efficient voltage regulation in devices ranging from smartphones to industrial machinery.

2. Major Types & Functional Classification

Type	Functional Features	Application Examples
Fixed Inductors	Stable inductance value, low tolerance	Power supplies, DC-DC converters
Variable Inductors	Adjustable inductance via movable core	Tunable RF circuits, radio frequency matching
Power Inductors	High current handling, low DCR	Switching regulators, motor drives
RF Inductors	High Q-factor, low parasitic capacitance	5G base stations, wireless charging systems
Common Mode Chokes	Differential-mode noise suppression	Network interfaces, power line filters

3. Structure & Composition

Typical KitsInductor Kits consist of: - Coil Windings: Copper or aluminum wire wound around a core - Magnetic Core: Ferrite, powdered iron, or toroidal materials - Encapsulation: Molded plastic or epoxy coating - Termination: SMD pads or through-hole leads - Identification Markings: Inductance value codes and ratings

4. Key Technical Specifications

Parameter	Description	Importance
Inductance (L)	Ranges from nH to mH	Determines energy storage capacity
Current Rating (IDC)	100mA-20A	Prevents saturation in power circuits
DC Resistance (DCR)	10m -5	Affects efficiency and thermal performance
Self-Resonant Frequency (SRF)	1MHz-200MHz	Defines operational frequency limits
Q Factor	20-300	Indicates quality of energy storage at RF

5. Application Fields

Consumer Electronics: Mobile phone charging circuits, laptop VRMs
Industrial: Variable frequency drives, PLC power modules
Automotive: ECU voltage regulators, EV battery management
Telecommunications: 5G NR filters, optical transceiver bias circuits

6. Leading Manufacturers & Products

Manufacturer	Key Product	Features
TDK Corporation	CDRH3D28	1.5 H power inductor, 8.1A rating
Coilcraft	0402CS Series	100MHz SRF, 0.1 H-10 H range
Vishay Dale	IHLP-2525CZ	Compliant with AEC-Q200 automotive standard

7. Selection Recommendations

Key selection criteria include: - Matching inductance value to switching frequency (e.g., 10 H for 100kHz buck converters) - Current rating exceeding peak circuit requirements by 20% - Operating temperature range (-55 C to +155 C for industrial) - Package size constraints (0402 to 1812 SMD for portables) - Cost optimization for mass production

Example: For a 2A smartphone PMIC, select 2.2 H 0603 inductor with <200m DCR.

8. Industry Trends

Future developments include: - Miniaturization: 0201-inch SMD inductors for wearable devices - High-frequency operation: SRF >10GHz for mmWave applications - Integrated solutions: Inductor-IC co-packaging for VRMs - Advanced materials: Amorphous nanocrystalline cores for EVs - Environmental compliance: Halogen-free encapsulation materials